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The crystal structure of 1,2-bis(2-aminophenoxy)ethane, C
14H
16N
2O
2, exhibits intermolecular close contacts between the amine groups and O atoms of neighbouring molecules. In addition, weak C—H
O hydrogen-bonding interactions are present. A crystallographic twofold axis bisects the central C---C bond.
Supporting information
CCDC reference: 229476
Key indicators
- Single-crystal X-ray study
- T = 120 K
- Mean (C-C) = 0.003 Å
- R factor = 0.061
- wR factor = 0.177
- Data-to-parameter ratio = 21.8
checkCIF/PLATON results
No syntax errors found
Alert level B
PLAT417_ALERT_2_B Short Inter D-H..H-D H1A .. H1A .. 2.09 Ang.
0 ALERT level A = In general: serious problem
1 ALERT level B = Potentially serious problem
0 ALERT level C = Check and explain
0 ALERT level G = General alerts; check
0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
1 ALERT type 2 Indicator that the structure model may be wrong or deficient
0 ALERT type 3 Indicator that the structure quality may be low
0 ALERT type 4 Improvement, methodology, query or suggestion
Data collection: CrysAlis CCD (Oxford Diffraction, 2003); cell refinement: CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2003).
1,2-Bis(2-aminophenoxy)ethane
top
Crystal data top
C14H16N2O2 | F(000) = 520 |
Mr = 244.29 | Dx = 1.308 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 170 reflections |
a = 26.33 (2) Å | θ = 2–32° |
b = 5.979 (8) Å | µ = 0.09 mm−1 |
c = 8.163 (10) Å | T = 120 K |
β = 105.14 (10)° | Block, yellow |
V = 1241 (3) Å3 | 0.4 × 0.4 × 0.3 mm |
Z = 4 | |
Data collection top
Oxford Excalibur2 diffractometer | 1660 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.074 |
Graphite monochromator | θmax = 31.7°, θmin = 4.8° |
ω–2θ scans | h = −38→37 |
5831 measured reflections | k = −8→8 |
1962 independent reflections | l = −11→7 |
Refinement top
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.061 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.177 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.09 | w = 1/[σ2(Fo2) + (0.1046P)2 + 0.6144P] where P = (Fo2 + 2Fc2)/3 |
1962 reflections | (Δ/σ)max = 0.005 |
90 parameters | Δρmax = 0.55 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
Special details top
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell e.s.d.'s are taken
into account individually in the estimation of e.s.d.'s in distances, angles
and torsion angles; correlations between e.s.d.'s in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s.
planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor
wR and goodness of fit S are based on F2, conventional
R-factors R are based on F, with F set to zero for
negative F2. The threshold expression of F2 >
σ(F2) is used only for calculating R-factors(gt) etc.
and is not relevant to the choice of reflections for refinement.
R-factors based on F2 are statistically about twice as large
as those based on F, and R- factors based on ALL data will be
even larger. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
H1A | 0.4647 (8) | 0.443 (4) | −0.081 (3) | 0.046 (5)* | |
H1B | 0.4262 (9) | 0.594 (4) | −0.192 (3) | 0.047 (5)* | |
O1 | 0.45656 (3) | 0.16732 (13) | 0.10458 (9) | 0.0167 (2) | |
C2 | 0.40368 (4) | 0.19399 (17) | 0.02613 (12) | 0.0156 (2) | |
C7 | 0.47062 (4) | −0.02137 (17) | 0.21506 (12) | 0.0168 (2) | |
H7A | 0.4593 | −0.1586 | 0.1529 | 0.020* | |
H7B | 0.4536 | −0.0115 | 0.3069 | 0.020* | |
C1 | 0.39252 (4) | 0.37962 (18) | −0.08417 (12) | 0.0183 (2) | |
C3 | 0.36364 (4) | 0.0565 (2) | 0.04940 (13) | 0.0203 (3) | |
H3 | 0.3715 | −0.0659 | 0.1219 | 0.024* | |
N1 | 0.43429 (4) | 0.51631 (17) | −0.10006 (13) | 0.0239 (3) | |
C6 | 0.34030 (5) | 0.4225 (2) | −0.16850 (15) | 0.0255 (3) | |
H6 | 0.3322 | 0.5440 | −0.2418 | 0.031* | |
C5 | 0.30007 (5) | 0.2858 (2) | −0.14465 (16) | 0.0289 (3) | |
H5 | 0.2653 | 0.3171 | −0.2014 | 0.035* | |
C4 | 0.31158 (5) | 0.1029 (2) | −0.03651 (15) | 0.0265 (3) | |
H4 | 0.2846 | 0.0113 | −0.0214 | 0.032* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0172 (4) | 0.0194 (4) | 0.0123 (4) | −0.0014 (3) | 0.0016 (3) | 0.0031 (2) |
C2 | 0.0179 (4) | 0.0186 (5) | 0.0099 (4) | 0.0002 (3) | 0.0031 (3) | −0.0009 (3) |
C7 | 0.0204 (5) | 0.0165 (5) | 0.0125 (4) | −0.0009 (3) | 0.0024 (3) | 0.0017 (3) |
C1 | 0.0238 (5) | 0.0177 (5) | 0.0123 (4) | 0.0007 (4) | 0.0030 (3) | −0.0005 (3) |
C3 | 0.0207 (5) | 0.0249 (5) | 0.0149 (5) | −0.0033 (4) | 0.0042 (3) | 0.0001 (4) |
N1 | 0.0313 (5) | 0.0208 (5) | 0.0186 (5) | −0.0044 (4) | 0.0049 (4) | 0.0051 (3) |
C6 | 0.0267 (6) | 0.0272 (6) | 0.0197 (5) | 0.0066 (4) | 0.0011 (4) | 0.0032 (4) |
C5 | 0.0202 (5) | 0.0397 (7) | 0.0242 (6) | 0.0057 (5) | 0.0009 (4) | −0.0004 (5) |
C4 | 0.0195 (5) | 0.0374 (7) | 0.0223 (5) | −0.0030 (4) | 0.0047 (4) | −0.0009 (5) |
Geometric parameters (Å, º) top
O1—C2 | 1.3814 (19) | C3—C4 | 1.395 (2) |
O1—C7 | 1.4314 (18) | C3—H3 | 0.9300 |
C2—C3 | 1.3884 (17) | N1—H1A | 0.89 (2) |
C2—C1 | 1.411 (2) | N1—H1B | 0.86 (2) |
C7—C7i | 1.503 (2) | C6—C5 | 1.391 (2) |
C7—H7A | 0.9700 | C6—H6 | 0.9300 |
C7—H7B | 0.9700 | C5—C4 | 1.388 (2) |
C1—C6 | 1.391 (2) | C5—H5 | 0.9300 |
C1—N1 | 1.4032 (17) | C4—H4 | 0.9300 |
| | | |
C2—O1—C7 | 116.53 (10) | C2—C3—H3 | 120.2 |
O1—C2—C3 | 125.27 (11) | C4—C3—H3 | 120.2 |
O1—C2—C1 | 113.79 (11) | C1—N1—H1A | 112.8 (15) |
C3—C2—C1 | 120.94 (12) | C1—N1—H1B | 112.0 (15) |
O1—C7—C7i | 108.08 (9) | H1A—N1—H1B | 115 (2) |
O1—C7—H7A | 110.1 | C5—C6—C1 | 120.84 (12) |
C7i—C7—H7A | 110.1 | C5—C6—H6 | 119.6 |
O1—C7—H7B | 110.1 | C1—C6—H6 | 119.6 |
C7i—C7—H7B | 110.1 | C4—C5—C6 | 120.27 (13) |
H7A—C7—H7B | 108.4 | C4—C5—H5 | 119.9 |
C6—C1—N1 | 122.96 (12) | C6—C5—H5 | 119.9 |
C6—C1—C2 | 118.35 (12) | C5—C4—C3 | 119.93 (12) |
N1—C1—C2 | 118.66 (12) | C5—C4—H4 | 120.0 |
C2—C3—C4 | 119.67 (12) | C3—C4—H4 | 120.0 |
| | | |
C7—O1—C2—C3 | 1.64 (14) | O1—C2—C3—C4 | 179.42 (9) |
C7—O1—C2—C1 | −178.54 (8) | C1—C2—C3—C4 | −0.39 (16) |
C2—O1—C7—C7i | 179.28 (8) | N1—C1—C6—C5 | −178.02 (11) |
O1—C2—C1—C6 | −179.46 (9) | C2—C1—C6—C5 | 0.03 (17) |
C3—C2—C1—C6 | 0.37 (16) | C1—C6—C5—C4 | −0.40 (19) |
O1—C2—C1—N1 | −1.33 (14) | C6—C5—C4—C3 | 0.37 (19) |
C3—C2—C1—N1 | 178.50 (10) | C2—C3—C4—C5 | 0.02 (18) |
Symmetry code: (i) −x+1, y, −z+1/2. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···O1ii | 0.86 (2) | 2.48 (3) | 3.236 (3) | 147.9 (19) |
Symmetry code: (ii) x, −y+1, z−1/2. |
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